Ecopetrol (EC-0.9%) says two rebel bomb attacks have halted pumping operations along Colombia's second most important oil pipeline, the Cano-Limon Covenas.

Rebel attacks on Colombian oil installations have been a frequent occurrence during the conflict over the past 50-plus years.

The 485-mile pipeline has the capacity to transport up to 210K bbl/day of crude from oil fields operated by Occidental Petroleum (OXY-1.1%) near the border with Venezuela to the Caribbean port of Covenas.